1. Nutrient transport: Nutrients and vitamins are transported to different parts of the body through the blood.
2. Oxygen transport: Blood carries oxygen from the heart to different parts of the body.
3. Carbon Dioxide Transport: Blood carries carbon dioxide from different parts of the body to the heart.
4. Acid-base balance: Blood maintains the body’s acid-base balance with the help of phosphate and carbonate compounds.
5. Blood coagulation: When a wound occurs anywhere in the body, the microcirculation stops blood flow by coagulation.
6. Temperature Balance: Heat balance is regulated throughout the body through the blood.
7. Self-defense: When a microbe enters the body, the blood protects the body by eating the microbe in the process of phagocytosis.
8. Immunity: Blood makes the body immune to diseases by making antibodies.
9. Wound healing: Blood produces fibroblasts to heal wounds in the body.
10. Storage: Plasma proteins act as storage of proteins in the body. When the amount of protein in the body decreases, the tissues take protein from the storage.
11. Homeostasis: Blood balances the internal environment of the body. This is called homeostasis.
12. Water balance: Water balance in the body is controlled through the blood.
13. Ion Balance: It maintains ion balance in the body.
14. Diagnosis: When there is any change in the body, there is a change in blood composition. Therefore, diagnosis is made by analyzing blood components.
15. Transport of metabolic substances: Blood carries chemical substances such as hormones, vitamins, antibodies etc. to the site of action. These substances regulate metabolism.
16. Transport of waste products: Blood carries the body’s urea, uric acid, bilirubin, CO2, etc. to organs such as kidneys, liver, lungs, sweat glands etc. These organs then excrete the wastes.